TWI227079B - Batch testing system and method for wireless communication devices - Google Patents

Abstract

The present invention provides a batch testing system and method that applies a single shielded anechoic chamber to simultaneously test multiple wireless communication devices. The shielded anechoic chamber can avoid external electromagnetic interference, reduce the strength of reflected signal significantly and provide stable channel environment, thereby testing the signal transceiving of the wireless communication devices more precisely. The present invention also provides an advantageous design for the batch container and loading mechanism within the chamber to upgrade the testing efficiency.

Description

1227079 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a batch test system and method for wireless communication devices, particularly a method for testing multiple devices in a shielded anechoic chamber at the same time. Wireless communication device testing system and method 0 [Prior art], mobile phone local area line communication device, (access test room in a dark room, put a device, then the entire test (including the installation being tested by radio waves is very lack of time to test multiple Installing this will increase costs. Therefore, the cost-tested factory mode (cable devices have been batched in recent years' with the rapid advancement of wireless communication technology (mobile phone) and wireless network (wireless network; WLAN) applications have also been increasing Generally. For manufacturers that do not have mobile power, wireless network interface card, wireless bridge Point, etc., they usually send and receive signals on radio products. However, the test method is only one time :: wave dark room If there are many products waiting to be tested? The second room J9 spends a lot of time in the installation test of the device under test. Installation, etc.), and if ί = the device under test is in an idle state, so right heart is used for batch testing (batch tes, you need to add multiple radio waves: the test cost, including the installation until the loan is reached, but : For the need for a large number of wireless communications :: two operators of manual labor, the aforementioned test method is: ==, low-level advancement of a line of tests = the first test ... Figure 1 shows the wireless communication in electric mode βιιιβ, 1227079

The pilot signal of the test is received, which device is generated, the device is passed, and the device 14 is monitored, and the monitoring device is used to send the test device. A complete block diagram is provided. Of delivery. Switch 1 3 and 1 4 are used to connect 11 and 1 switch 1 3. The test control unit is used to test the test batch. In addition to the test and reliable diagram, a two-to-N switch is used. Reference number 3 also includes N devices under test 丨 4, i: control unit 15. The control unit 15 is used to control the signals transmitted / received. In addition, the picture also contains a signal: Tiger monitoring device 12, the former can generate a test signal, and the test signal is transmitted to the receiving function of the device under test selected by the control unit 5; the latter is received from the switch 3 and selected by 15 The test signal transmitted by the device under test 4 is set to transmit function. Although this method can be set in the same set, it is difficult to provide a test report for the product because the cable mode is used to simulate the antenna of the signal receiving wireless communication device. In view of this, the present invention proposes a batch testing system and method, which can not only avoid the aforementioned defects of performing batch testing in a cable mode, but also can simultaneously test multiple wireless communication devices at a lower cost to improve testing efficiency. . [Summary of the Invention] The present invention uses a single anechoic chamber for batch testing. In addition to avoiding electromagnetic interference (EMI) from the outside, the anechoic chamber is made of a special material and the signal is transmitted to the inner wall. Most of the energy is absorbed, so the strength of the reflected signal can be minimized, which can avoid the instability of the propagation signal caused by the multi-path effect, so that the signal transmission and reception of the wireless communication device can be tested more accurately. The hair

1227079 V. Description of the invention (3) The Ming also uses the special design of the batch container and its installation mechanism in the anechoic chamber to facilitate the batch test of multiple wireless communication devices and improve the inclusive rate. Therefore, the main object of the present invention is to provide a batch test system for a wireless communication device, which includes: a signal generating device for generating a first test signal; a transceiver unit, which is disposed in an anechoic chamber A (shielded anechoic chamber), and is connected to the signal generating device to transmit the first test signal; and a plurality of wireless communication devices to be tested are arranged in the anechoic chamber to receive the first test signal transmitted by the transceiver unit and transmit The plurality of second test signals are sent to the transceiver unit. The batch test system also includes a signal monitoring device coupled to the transceiver unit to monitor the second test signal received by the transceiver unit. A batch container is set in the anechoic chamber to carry the communication devices under test, and a window-type or drawer-type mechanism is used to place the anechoic chamber. A second objective of the present invention is to provide a batch test method for wireless communication devices, which includes: placing a plurality of wireless communication devices in an anechoic chamber; generating a first test signal; and causing a transceiver unit to transmit a first Test signals; enable the wireless communication devices to receive the first test signal; analyze the first test signals received by the wireless communication devices; cause the wireless communication devices to transmit a plurality of second test signals; and enable the transceiver unit to receive the A second test signal; and monitoring the second test signals received by the transceiver unit. The present invention also provides another batch testing method, which includes: placing a plurality of wireless communication devices in an anechoic chamber; and from the wireless communication devices

Page 8 1227079 V. Description of the invention ^ -----------_____ Select a wireless communication device of a transmitting group and a wireless communication device to transmit the raft receiving group; make the device of the transmitting group receive the test gas 〇 Less than one test signal; Test message for wireless communication received by the receiving group | Tiger ^; and analysis of the wireless communication device of the receiving group for reviewing Hunchun's "I agree, hereby have a better understanding of the present invention and Embodiments of the present invention are described in detail in the following drawings. [Embodiment] This section will detail the batch test system of the present invention with a detailed example of each system and method. Example I: Schematic. FIG. 2 is a view of a plurality of wireless communication devices of the batch test system of the present invention. The batch test system is used to test a multi-line telephone. ^ Γ such as wireless network interface card, wireless bridge, none =,;,: The test system 20 includes a -signal generating device 21, which is used to set £ 1 to Θ ^ ί ^^. In order to obtain better test results, the signal generator is equipped with a __communication device-selected sample field center & 'm, the characteristics are still in line with the technical standards that the device under test should produce. The signal quality is better and meets the test. demand. In addition, a vector signal can be used to generate 1 (vect〇r signal = nerator), or a power amplifier (pοwer ampiifier) can be used as the signal generating device 21, which can generate more accurate and more clever signals as required. . The batch test system 20 also includes an anechoic chamber 24, which can isolate external radon interference and reduce the reflection effect of the signal when it propagates inside. A transmitting / receiving unit 241 is provided inside the radio wave β chamber 24, which includes an antenna or an antenna array 1227079 V. Description of the invention (5) Column 'is lightly connected to the signal generating device 21 for transmitting a first test signal. The wireless communication device to be tested receives the first test signal transmitted from the transceiver unit 241, and transmits a plurality of second test signals to the transceiver unit 241. In the embodiment shown in FIG. 2, the anechoic chamber 24 is pyramidal, and the transceiver unit 241 is placed on the top of the vertebral body, so that it can have a larger silent area than a general anechoic chamber. (Quiet z ^ ne). The mute area is generated by the characteristics of the anechoic chamber 24. In this area, the signals transmitted by the transceiver unit 241 are transmitted in addition to the direct path from the transceiver unit 241 to the device under test (that is, the direct path without reflection). Except for some, the reflection signals of other indirect paths will be minimized. Placing the device under test in this quiet zone can achieve better test results. The radio wave has a batch container 2 4 2 within 24 to carry the device under test. In the embodiment of Fig. 2, the batch container 242 is a square container with a square grid-shaped compartment for placing the wireless communication device to be tested. The axis of the antenna of the transceiver unit 241 (boresight) is kept aligned with the center of the square batch container 242. In another embodiment, the 'batch container is a ring container with a fan-shaped compartment. , Used to place the wireless communication device under test, as shown in Figure 3. At this time, the center of the spool of the transceiver unit 241 is kept aligned with the center of the circular batch container or aligned with a sector, such as this sector The centroid of the compartment, after the testing of the devices in this compartment is completed, then rotate the circular batch container to align the antenna axis with the next compartment 'to perform the test in this way. Batch test system 20 more Provide the design of the installation mechanism of the device under test, as shown in Figures 4A and 4B. Figure 4A shows the batch container 242 using a window type machine

1227079 V. Description of the invention (6)-Schematic diagram of constructing the anechoic chamber 24. FIG. 4B is a schematic view of the batch of crying 242 being placed in the anechoic chamber 24 using a drawer-type mechanism. Using the two mounting mechanisms described above, you can quickly and easily install multiple devices under test at one time to test time. The 'batch test system 20' in FIG. 2 also has a signal monitoring device 22 coupled to the transceiver unit 241 for analyzing the second test signal received by the transceiver unit 241. According to the requirements of different test items, the signal monitoring device 22 may use different instruments and equipment, such as a vector signal analyzer & power meter, or a spectrum analyzer. In addition, a Gold Sample of the communication device to be tested can also be used as the signal monitoring device 22. The batch test system 22 uses a control unit 25, such as a personal computer or a work station, to couple it to the signal generating device 21, the signal monitoring device 22, and the device under test to control the generation of the first test signal, respectively. 2. Monitoring and emission of the second test signal. The control unit 25 may also execute related analysis software to analyze the test signals. In the foregoing embodiment using a ring-shaped container, the control unit 25 may be further coupled to the ring-shaped container 2 to control its rotation amplitude. The batch test system 25 also uses a multiplex = 23, which is coupled to the control unit 25, and the signal generating device 2 丨 and the signal monitoring device 22 are respectively coupled to the transceiver unit 241 via the multiplexer 23, as in the first Figure 2 does not. In this way, the multiplexer 23 can switch between the signal generating device 21 and the signal monitoring device 22 under the control of the control unit 25, or switch between different signal generating units in the signal generating device 21, or Switch between different signal monitoring units in the signal monitoring device 22.

^ m ~ \ p. 11 1227079

V. Description of the invention (7) The receiver shall explain how to use the aforementioned test system 20 to implement this and the batch test method. Fig. 5 is an operation flowchart of the preferred embodiment of the batch test method of the present invention. As shown in FIG. 5, this method includes placing a plurality of wireless communication devices under test in the radio wave dark container 242 with 501; 502 switching the multiplexer 2 3 to the signal generating device 2 j; 503 enabling the signal generating device 21 Generate the first test signal; 504 transmit the first test signal through the transceiver unit 241; 505 borrow the devices under test to receive the first test signal; 5 06: use the control unit 25 to analyze the first test received by the device under test— Signal; 507 switches the multiplexer 2 3 to the signal monitoring device 2 2; 508 f transmits a plurality of second test signals from the devices under test; 509 receives the second test signals through the transceiver unit 24 1; and 510 The flood monitoring device 22 is used to monitor the second test signal received by the transceiver unit 2 41. In step 501, the device under test is installed in a quiet zone. The installation mechanism shown in FIG. 4A or 4B can be used to better locate the batch container 242 in the anechoic chamber 24. Steps 502 to 506 are used to test the receiver of the device under test. In these steps, the multiplexer 23 is switched to the device 21 so that the first test signal generated by the signal generating device 21 can be transmitted in the anechoic chamber 24 through the transceiver unit 241, and connected by the device to be tested &

1227079 V. Description of Invention (8) '-Receiver Receiver' for subsequent signal analysis. As mentioned earlier, the signal generating device 21 here can be a vector signal generator or a selected sample of the device under test. In the preferred embodiment of FIG. 5, step 505 uses all the wireless communication devices at the same time to receive the first test signal on a preselected channel.] Then in step 506, the control unit 25 In a suitable method, for example, the signal dual ity analysis software is executed, and the first test signal received by the device is individually analyzed to measure the minimum input power of the mother-to-be-tested device in the predetermined channel. And packet error rate (pER), such as the receiver input power of the device under test and the packet error rate. In another preferred embodiment, step 接收 sequentially uses each device under test to receive the first test in a predetermined channel. Then in step 506, the control unit 25 sequentially analyzes the first test signal received by each device under test, for example, executes a bond quality analysis software to measure that in the predetermined channel, every -1, · 'Downlink ink throughput, eg σ · The throughput of the downlink data of the receiver of the device under test. Steps 50 to 510 are used to test the transmitter of the wireless communication device. In these steps, the multiplexer 23 is switched to the second position, so that the second test signal anechoic chamber 24 transmitted by the transmitter of the device under test is received by the antenna of the transceiver unit 241, and the signal is monitored. The device 22 performs subsequent signal analysis. As mentioned before, if one of the items J is measured, the signal monitoring device 22 will be different. If it is * the maximum output power and error vector size of the transmitter

1227079 V. Description of the invention (9) (error vector magnitude, EVM), the signal monitoring device 22 uses a selected sample of the device under test, or a vector signal analyzer with a power meter. In step 508, each device under test sequentially transmits a second test signal on a predetermined channel. Then, in step 5, the second test signal received by the transceiver unit 241 is monitored by using the previously used signal monitoring device 22 to sequentially measure the maximum value of the transmitter of each device under test in the predetermined channel. Output power and error vector size. In addition, the uplink data throughput of each transmitter of the device under test on the predetermined channel is measured in step 5 1 〇 y. Another situation is that if the center frequency of the transmitter of the wireless communication device is to be tested (Center frequency) and power mask, the signal monitoring / regulating device 22 uses a spectrum analyzer (Spectrum anaiyzer). In step 508, a plurality of devices under test are selected to simultaneously transmit a second test signal on a plurality of predetermined channels which do not overlap each other. For example, for products with WUN specifications, two of the devices under test can be selected, such as: setting = channels 1 and 8 (or channels 2 and 9 ... and so on) to transmit test signals. Some channels are far away from each other, so f-stacking and interference will not occur in the frequency spectrum, and they can be tested at the same time to improve efficiency. Then in step 510, the spectrum analyzer is used to analyze the second test signal received by the transceiver unit 241 to simultaneously measure the center frequency and power of the selected device transmitter in these non-overlapping predetermined f channels. Therefore, with this batch test method, we can quickly measure the relevant data of the signal transmission and reception of multiple test devices, which can greatly improve the test efficiency.

Page 14 1227079 5. Description of the invention (ίο) rate. Further, by repeating steps 5 02 to 510 for other untested channels in the specification, we can know the quality and capability of the signal transmission and reception of the wireless communication device under test within the frequency spectrum defined by the regulations. i For the test of the throughput of the uplink / downlink data of the wireless communication device, the present invention also provides another preferred embodiment of the batch test method. The operations and processes are shown in FIG. 6. In this embodiment, a test method is adopted in which the devices under test send and receive signals to each other, so only one ^ portion of the structure shown in Figure 2 can be used to operate. The signal generating device 21 in the original test system 20, gas ° ^ : The device 22, the multiplexer 23, and the transceiver unit 241 do not need to be used. This cardiac monitor includes the following steps: ^ 601: Place a plurality of wireless communication devices under test in the anechoic chamber M. M2: Select from the devices under test by the control unit 25. ^ 射 组 洗 ^ 603 604 605 Device under test; 1. Make the device under test in the transmitting group transmit at least one test number 1. Make the device under test in the receiving group receive the test signal: = and the control unit 25 analyzes the test step received by the device under test in the receiving group 603 The test signal is transmitted from each of the overlapping predetermined channels of the transmission group; if each test device that is set in the non-receiving group at the same time is in 604, the test signal is received. In step 605, the signal is received by a predetermined channel that is controlled by the same child: the test signal received by the device, such as the analysis of the receivers of the receiving group in the early two days, to measure the results of the non-overlapping knot quality analysis. Chain data throughput and sending = data upload of the device under test in the receiving group

Page 15 1227079 V. Description of the invention (11) The throughput. Then take the WLAN product as the transmission group, and the other two channels to be measured do not overlap with each other, for example, and so on), to transmit / receive the uplink data throughput of the receiving group devices in channels 1 and 8. Aiming to obtain the device under test in the entire specification, the above description is made to better use the scope of the present invention. Any familiar modification can not be separated from the attached application description. The specifics of the implementation of the present invention clearly describe the patent requirements. Please scrutinize 0 as an example. Two of the devices under test can be selected as the receiving group, and each group of devices is divided. Suppose: Channels 1 and 8 (or channels 2 and 9 receive test signals. In this way, you can measure the throughput of the downlink data and the other channels of the transmission group device and repeat the test. Downlink data throughput. The examples illustrate the present invention in detail, but are not limited to those skilled in the art who want to protect the scope of patents. In summary, we have already met the requirements of the Patent Law. Members benefited from scrutiny and granted a patent as

1227079

[Brief description of the diagram] The first diagram of the batch test setup is a block diagram of wireless communication in cable mode.

Figure 2 is a three-dimensional view of the preferred embodiment of the batch test system and system of the present invention. Figure 4A is a schematic diagram showing the use of a window-type mechanism to place the anechoic container into the anechoic chamber using a drawer-type mechanism. Fig. 5A shows the action measurement method of the embodiment of the present invention. Figure of another preferred embodiment. The flow chart of the preferred actual operation of the batch test method is shown in Figure 6. The figure of the present invention ^. Phase ^ diagrams: 11-Signal generating device 1 3-Switcher 1 2-Signal monitoring device 15-Control unit Device under test 20 ~ Batch test system 22-Signal monitoring device 21-Signal generating device 24-Anechoic chamber 23-Multiplexer 242-Batch container 241-Transceiver unit 501-510- 25-Control unit batch of the present invention Action flow of the preferred embodiment of the long-term test method 1227079 The diagram briefly illustrates the process 6 0 1 ~ 6 0 5-The action flow of another preferred embodiment of the batch test method of the present invention 11 ^ 1 page 18

Claims (1)

1227079 VI. Scope of patent application 1 · A batch test system for wireless communication devices, at least: a signal generating device for generating a first test signal; a transceiver unit, which is arranged in an anechoic chamber and is coupled Connected to the signal generating device to transmit the first test signal; a plurality of wireless communication devices to be tested are arranged in the anechoic chamber to receive the first test signal transmitted by the transceiver unit and transmit a plurality of first Two test signals are sent to the transceiver unit; and a signal monitoring unit is coupled to the transceiver unit to monitor the second test signals received by the transceiver unit. 2 · The batch test system as described in item 1 of the patent scope, further including: a control unit connected to the signal generating device, the signal monitoring device and the wireless communication devices to be tested, for Control the generation of the first test signal, and the monitoring and emission of the second test signals. 3 · The batch test system as described in item 2 of the scope of patent application, further comprising: a multiplexer coupled to the control unit, the signal generating device and the signal monitoring device for switching to the signal generating device And the signal monitoring device. 4. The batch test system according to item 3 of the patent application scope, wherein the signal generating device includes a plurality of signal generating units, and the multiplexer can be switched between the signal generating units. 5 · For the batch test system described in item 3 of the patent application, 4 & fan monitoring device includes a plurality of signal monitoring units, and the multiplexer can be switched between the signal monitoring units. 6 · The batch test system described in item 丨 of the scope of patent application, further including: Ϊ227079 VI. The scope of patent application is used to carry the batches which are not included in the batch and which are controlled by the batch, where the batch D where the electricity is in the electricity where the electricity is in the batch container (batch container line) Communication device. Ry • Batch test system as described in item 6 of the scope of patent application-a trough container is a square container. • Batch test system as described in item 6 of the scope of the patent application-a circular container The device is connected to a control unit to control its rotation range. 9 · As in the batch test system described in item 6 of the scope of patent application, Otani is placed in the anechoic chamber with a window mechanism. 1 〇 · If applied The secondary container of the batch test system described in item 6 of the patent scope is inserted into the electric wave anechoic chamber by a drawer cracking mechanism 1 1 · The anechoic chamber of the batch test system described in item 1 of the patent scope is a pyramid (pyraIDidal ). 1 2 · The batch test system described in item 1 of the scope of patent application is cubical. 1 3 · The batch test system in item 1 of the scope of patent application The unit is an antenna or antenna array. 1 4 · The batch test system wireless communication device as described in item 1 of Shenjing's patent scope is placed in a quiet zone (Quiet zone) of the anechoic chamber. 1 5 · If applied The batch test system described in item 丨 of the patent scope, wherein the signal generating device is a vector signal generator 〇 1 6 · The batch test system described in item 1 of the patent scope, wherein the Information Page 20 1227079 VI. The scope of application for patents' f. The production device is one of these wireless communication devices. (Golden Sample) 〇 1 7 · The batch test system described in item 丨 of the scope of patent applications, where The signal monitoring device includes a vector signai analyzer and a power meter. 1 8. The batch test system as described in item 丨 of the patent application scope, wherein the signal monitoring device includes a spectrum analyzer (spectruin analyzer). 19 • The batch test system as described in item 1 of the scope of patent application, wherein the signal monitoring device is a selected sample of the wireless communication devices. 2 〇—A batch test method for wireless communication devices, including at least: placing a plurality of wireless communication devices in an anechoic chamber; generating a first test signal; causing a transceiver unit to transmit the first test signal; Cause the wireless communication devices to receive the first test signal; analyze the first test signal received by the wireless communication devices; cause the wireless communication devices to transmit a plurality of second test signals; enable the transceiver unit to receive the first test signals Two test signals; and monitoring the second test signals received by the transceiver unit. 21 The batch test method as described in item 20 of the patent application scope, wherein the anechoic chamber is a pyramid. 2 2 · The batch test method as described in item 20 of the scope of patent application, wherein the wireless communication devices are placed in a quiet zone of the anechoic chamber. 23. The batch test method described in item 20 of the scope of patent application, wherein the Page 21 1227079 VI. Scope of patent application The first test signal was generated from a selected sample of one of these wireless communication devices. 24. The batch test method as described in item 20 of the patent application scope, wherein the first test signal is generated by a vector signal generator. 8 ^ 25. The batch test method described in item 20 of the scope of patent application, wherein some wireless communication devices receive the first test & '26. If the analysis is the best, 27. If the device is tested, 28. If the analyzer is measured, 29. If the line is called, apply. 30 · If you apply for the test, the 25th wireless communication device includes analysis of the patent scope of each small input function and enclosing one of the 20th second test signals. Selected samples are included in the patent range. 20 These second test signal meters perform the step monitoring described in the first test signal signaling device of the 20th and the first patented signal device in a predetermined item and the step of the monitoring item described in the received non-packet error items. The batch test of the first-line communication load rate (PER) measured by the batches described in the above item is the batch test of the profit 0, and the batch test of the profit. The test message is placed in the 0 test method. The test method and the one-way test method are used to reserve a channel by each of the second steps, in which the wireless communication is monitored, and the monitoring signal is sent. The batch test method described in item 29 of the patent scope is requested. The step of monitoring the second test signals includes analyzing the maximum output power and error of each of the non-sense devices on the predetermined channel. 1227079 Six, the scope of patent application (EVM). Q 1 J: Φ Φ ^ ^ #Small test method, where d 1 · /, T are as described in Item 20 of the patent application scope ^ Sincerely expected, ", middle-aged: heading 丨 丨 # 4 α _ The yf system is performed by using a frequency center as the analyzer T / the nightmare system W ^ of the second test signals. 3 2 · The batch test method as described in item 20 of the scope of the patent application, wherein the steps of transmitting the second test signals include: ^ ^ y ^% to camp on each other & These wireless devices are installed I. Non-overlapping predetermined channels transmit the second tests. Bu 33. The batch test = method described in item 32 of the scope of patent application, wherein the step of monitoring the second test signals includes analyzing the predetermined channels corresponding to each selected wireless communication device. Center frequency and power mask. 3 4 · The batch test method described in item 20 of the patent application scope, wherein the step of receiving the first test signal includes sequentially using each wireless communication device to receive the first test signal on a predetermined channel . 35. The batch test method described in item 34 of the scope of patent application, wherein the step of analyzing the first test signal includes analyzing the downlink data throughput of each of the wireless communication devices on the predetermined channel (downl ink throughput) ° 36. The batch test method as described in item 29 of the scope of patent application, wherein the analysis of the second test signals includes the analysis of each of the wireless communication devices on the predetermined channel. Throughput (up 1 ink throughput) ° 3 7. —A batch test method for wireless communication devices, including at least ... 1227079 VI. The scope of the patent application will place a plurality of wireless communication devices in an anechoic chamber; choose a wireless communication device of a transmitting group and a receiving group among the wireless communication devices; make the wireless communication device of the transmitting group transmit At least one test signal; ... causing the wireless communication device of the receiving group to receive the test signal; and the signal. 38. If applying for the test signal device is the same as 39. · If applying for the test signal device, the same number. 4 0 · The batch test method described in item 37 of the test signal range received by the wireless communication device of the receiving group if the throughput data is transmitted through the application-specific analysis step, wherein the step of transmitting a signal includes transmitting by the transmitter Each radio of the group transmits the test signal on non-overlapping predetermined channels. The batch test method described in item 38 of the scope of interest, wherein the step of receiving a signal includes receiving the test message by each wireless communication of the receiving group on the non-overlapping predetermined channels. The test method is the 39th item in the scope of Fuzhong cockroach. ^ ^ ^ ^ ^ -Don't do this — The downlink information of the wireless communication device of the 々 group includes analyzing the receiving 缈 > &## ，, and analyzing the sending Sw key amount °